1. The vacuuming principle of customized car vacuum cleaners. The fan impeller of the car vacuum cleaner is driven by the motor at a high speed, and the air in the impeller is discharged from the fan at a high speed, and at the same time, the air in the suction part is continuously replenished into the fan. This creates a higher pressure difference with the outside world. 2. The original of the vacuum cleaner. Suction vacuums also come with a range of brushes and nozzles for cleaning corners and crevices.